90 Frazer on Int. Cong, of Geologists. 
ontology will be continued usefully with the aid of the zoolo- 
g-ists and botanists. * * * 
The council proposed the following- resolution which was 
accepted without dissent. "The Congress decides that an ap- 
peal shall be made to the zoological and botanical societies, and 
•especially to the former, asking them to unite in the formation 
of a committee, or of an international congress, which shall 
have for its object the determination of the laws of biologic 
nomenclature and the establishment of similar rules in botany 
and zoolog}^, comprising in these paliEontology. 
Categorically stated the results reached by vote were as fol- 
lows: 
1. JVo?ne?iclaturc. («) Rock-masses. 
I. Group (Secondary, etc.) 2. Systeiiis (Jurassic, etc.) 
3. Series, (or section, or Abtheilung — Lower Oolitic, etc.) 
4. Etages (piano, piso, stage, Stufe — Bajocian, etc.) 5. As- 
sise (the equivalents in other languages than French not being 
stated. — Assise A. tlumphresianus, etc.) Couche can be em- 
ployed in French for assise. 7. A certain number of assises 
constitute a sub-t5tage. The first element of stratified masses 
is the couche, Schicht, stratum, strato, Retek (Hvmgarian). 
[b) CJiroiiologic divisions. 
9. Era, applies to the time of groups. 10. Period, to that of 
systems. 11. Epoch, to that of series. 12. Age, to that of 
Ctage. 
1 1 . Colors a7id sy?nhols. 
I. Crystalline schists, rose-carmine (preferably); deep rose 
for the rocks of undoubted pre-cambrian age, and pale rose for 
those of undetermined age. 2. Primary group; decision left 
to the committee on the map of Europe. 3. Secondary group 
i(]Mesozoic) ; Triassic, violet; Jurassic, blue; Lias, deep blue; 
Cretaceous, green. 4. Tertiary group (Cenozoic) yellow; 
light in proportion to the recent age of the rocks. 5. Quater- 
nary deposits; decision left to the European map committee. 
6. Resolution of details relating to shades, hachures, and letter 
notations. 
